UTF-8 mail subject block in what object

Sorry - yes we are aware of the issue - and sadly have still not have found the time to address it in a robust and sensible way - see
https://bugzilla.proxmox.com/show_bug.cgi?id=2057

for the bug-report enhancement request

cannot promise when we'll get around to tackling this - but it's rather high on our priority list for PMG

I hope this helps!